/*
 * smushit-cli - A command line tool for the Yahoo! Smush.it API
 *
 * Copyright (c) 2010 Benjamin Schneider
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "CurlBase.h"

#include <sstream>
#include <stdexcept>
#include "ApplicationInfo.h"
#include "CurlErrorException.h"

using std::string;
using std::stringstream;

namespace smushit_cli {

static size_t resultCallback(void* ptr, size_t size,
        size_t nmemb, void* userp) {

    string buf = string(static_cast<char*>(ptr), size * nmemb);

    stringstream *response = static_cast<stringstream*>(userp);
    *response << buf;

    return size * nmemb;
}

CurlBase::CurlBase():
    myCurlInstance(curl_easy_init()) {

    if (myCurlInstance == NULL) {
        throw std::runtime_error("Initializing Curl failed");
    }

    setupResultCallback();
    setupUserAgent();
}

CurlBase::~CurlBase() {

    if (myCurlInstance != NULL) {
        curl_easy_cleanup(myCurlInstance);
    }
}

void CurlBase::setupResultCallback() {

    SAFE_CURL(curl_easy_setopt(myCurlInstance, CURLOPT_WRITEFUNCTION,
            resultCallback));
    SAFE_CURL(curl_easy_setopt(myCurlInstance, CURLOPT_WRITEDATA,
            &myResultStream));
}

void CurlBase::setupUserAgent() {

    ApplicationInfo& info = ApplicationInfo::getInstance();
    stringstream userAgent;

    userAgent << info.getExecutableName() << "/" << info.getVersion();

    SAFE_CURL(curl_easy_setopt(myCurlInstance, CURLOPT_USERAGENT,
            userAgent.str().c_str()));
}

}

